woodchip. I do not know if chas49 has actually read or done the suggestions.
However The Media Drive is a mass storage device and uses the driver contained in Windows XP. The driver is in C/WINDOWS\SYSTEM32\DRIVERS\USBSTOR.SYS
It is 512600.2180(XP Sp 2 rtm) and is 25.8kb.
If this file is not there or is corrupt that may be the problem. If it is there copy and paste it to a folder on the desktop and then reinstall the Media Drive pointing it to that folder for the driver. The driver is not separate on an XP disc but part of a larger NTDLL.DLL with the same reference 512600.2180